201222221146 has 8 divisors (see below), whose sum is σ = 307528300404. Its totient is φ = 98712787680.

The previous prime is 201222221041. The next prime is 201222221147. The reversal of 201222221146 is 641122222102.

It is a happy number.

201222221146 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 186441740521 + 14780480625 = 431789^2 + 121575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 201222221146.

It is not an unprimeable number, because it can be changed into a prime (201222221147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 949161315 + ... + 949161526.

Almost surely, 2^201222221146 is an apocalyptic number.

201222221146 is a deficient number, since it is larger than the sum of its proper divisors (106306079258).

201222221146 is a wasteful number, since it uses less digits than its factorization.

201222221146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898322896.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 201222221146 its reverse (641122222102), we get a palindrome (842344443248).

The spelling of 201222221146 in words is "two hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred forty-six".